This delicate Diamond & Opal Nose Stud features an ethically sourced natural opal and white diamond for a touch of sparkle. Crafted in recycled solid 9k yellow gold, it's perfect for everyday wear. The design is super comfortable with a L shape post ensuring it is secure when worn. Diamonds are April's birthstone but also known to be a symbol of purity and absolute truth. Recycled Solid 9k Gold Natural Diamond colour is HI, clarity SI2. Natural Australian Opal. Solid 9k Gold This metal can be worn all day everyday without the fear of it changing colour. It will not tarnish and can be cleaned with warm soapy water and a soft non-abrasive cloth. If wearing everyday we recommend regular cleaning to keep its shine. Diamonds and Semi-Precious Stones Even though these stones can be worn everyday we recommend regularly cleaning them with warm soapy water and a soft non-abrasive cloth to keep their sparkle and shine. Using lotions and wearing in the shower will dull their appearance but this is easily sorted with a quick clean. Opals are the stone to be careful with as they are fragile and can crack with extreme temperature. Avoid spaying perfumes or hairspray near any jewellery.